Hay-grinder.



G. WETTERHDLD.

HAY GRINDBR.

APPLICATION FILED 0611.15, 1909.

aented Aug. 8, 1911.

Qu Ul Je WHA/fs E. )Lovm (Y0 @www UNITED STATES PATENT OFFICE.

GEORGE WETTERHOLD,

or WICHITA, KANSAS.

HAY-GRINDER,

Specification of Letters Patent.

Patented Aug. 8, 1911.

Application filed October 15, 1909. Serial No. 522,717.

others skilled in the art to which it apper-V tains to make and use the same.

My invention relates to hay grinders. The object of the invention is to produce a simple andl inexpensive machine for cutting and grinding cured hay, and fodder.

Another object is to const-ruct a machine that is difficult to wreck should any foreign object enter the machine.

For a full description of the operation,

thereof and also to acquire a knowledge of the details of construction and the means vfor effecting the result, reference is to be had to the following description and theaccompanying drawings in which:

Figure l, is a side elevation of my im proved apparatus. Fig. 2, a plan view thereof. Fig. 3, a perspective view of one of the cutters. Fig-4, a perspective view of one of the spacing links. Similar numbers refer to similar parts throughout the specification,

Referring to the drawings 1, designates a frame which carries the hereinbeforedescribed mechanism. have provided a round -shaft 2, having jarn-nuts 5, on each end, one being a right hand screw, the other a left. Rectangular bars of steel about i inch thick are provided with a hole in the center thereof. A. plurality of these bars are mounted alternately with washers 4, on shaft 2, in the inannerphown. The jam-nuts are screwed up tight which clamps the bars together on said shaft. This shaft is journaled in suitable bearings 17, (not shown in Fig. l) and partiallysurrounding said bars is a circular casing (5, secured to frame 1, vby

' bolts 7.v The lower half of the said casing (S,

isl provided with perforations (not shown) to allow the ground-materiali to pass through vand be conducted down to a conveyer 22, by

means of the inclines 21, and disposed of by an auger 23, on a vertical plane with shaft In the frame 1, is mounted a shaft 11,

made of steel about 3 inches wide, 6 inches long and {i6- `of an inch thick. One end is somewhat'beveled and is ground to a sharp edge, each cutter has a hole 20, therein near its center and a recess or slot 19, near one end on its under side. These cutters are mounted on shafts 11, and 12, with theelinks 9, therebetween, as shown in Fig. 2, and in such a manner that the cutting edges pass between the bars 3, (see Fig. 2). It is to be noted that shaft 12, is positioned in the slot 19. The jam-nuts 10, are screwed up tight and clamp the cutters 8, and the links 9, on said shafts. The conveyer 24, conducts the hay to be ground intovthe-machine. The pulleys l5, and 16, are mounted on 4shaft 2; 15, being the drive lpulley for the bars, and 16, being the drive pulley for the conveyer 24.

Having described the construction andA .assembling of my machine, I will now dethoroughly cut and pulverized. The bars 3, and the cutters 8, being heldin position by friction, it is apparent should a wrench or some other foreign object enter the machine the cutters contacting with said object would r be forced into the position indicated by the dottcd lines 26, and thus prevent a wreck, also the bars 3, would if forced too hard yield and progressively tighten, the friction turningl the jam-nuts toward each other', be-

-ing held in a normal-position by friction,

- not therefore desire to be understood as limon the said shaft, tok

grinder, lthe combination of a clamp said Washers and bars upon said shaft, parallel shafts mounted on sald frame adjacent the shaft aforesaid, and cutters pivotally mounted upon one of said ,parallel sl1afts,`eaeh of said cutters having a slot on its under side the wall of which is adapted to Contact with' the other parallel shaft.

2. yIna device of the character described, a rotary shaft with cutters thereonv in combination with ltwo parallel Shafts having mountedihereon cutters, said cutters being' piyoally mounted upon one of said shafts and said cutters having slots on their under sides, the walls of which are adapted to `conlaetwith the other parallel shaft and means for clamping said cutters upon said shafts whereby they may yield under sudden impaet before breaking. v

Y 3. Inad'evieeof the'eharaeter deseribed,a

I l f l a i. I i ,if l x rotary shaft with cutters thereon 1n comblnation `with two parallel shafts haying mounted thereon cutters, said cutters being GERGE W'itnesses E. C. BROWN, E. GrLovnR.`

-WETTERHQLD a pivotally mounted upon one of said shafts'lv. 

